Harpoon



S.. HANSEN.

HARPDON.

APPLICATION man JUNE 10,41'921.

Patented Apr. 25, 1922.

, INVENToR. s/@u/PD HANSEN v ATTORNEY a sri-ares SIGURD HANSEN, OF SAN FRANCESCO, CALIFORNIA.

nnnroon.

nemesi..

Specicaton'of Letters Patent.

Patented Apr. 25, 192.2..

application tied nm@ io, 192e. Vsenin no. 387,853.

To' @ZZ @0.7mm z5 may concern.' Be it known thatl l, SIGURD HANSEN, a citizen of the United States, residing at the city and county of San Francisco kand State of California, have invented a new and usefnl Improvement in Harpoons, 'of which the following is a specification. i

'This invention relates to a harpoon, anc especially to the bomb carryingrtype employed by ywhalers-and the like.

One of the objects of the present inven-V tion is to provide a harpoon for'whaling and the like which is simple in construction and exceedingly substantie1 for the lpurpose re quired; further to provide lulres, and means for automatically extending the same' after the harpoon has entered, and especially when a pull is exerted.

Another object of the invention is to provide a simple 'connection which permits ready removal or detachment of the bomb, and in conjunction therewith ahring mechanism which will insure firing ofthe bomb aV moment after entranceV and then only.

Further objects will hereinafter appear.

The invention consists of the parts and the construction, combination and arrangement of parts as hereinaftermore fully described and claimed, having reference to the accompanying drawings, in which- Fig. 1 is a side elevation'of the harpoon.

Fig.' 2 is a plan view of Fig. 1, showing the bomb removed.

Fig. 3 is an enlarged detail section of the bomb and the firing mechanism employed.

Referring to the drawings in detail, A indicates in general a harpoon consisting of an elongated bar 2, which is cylindrical in cross section. Formed on the forward. end of the bar is athreaded extension 3, and adapted to be attached thereto is a bomb d of suitable construction. Formed in opposite sides of the bar, near the forward end, is a pair of slots 5',- and pivotally attached inthe forward end of said slots upon pins 6 is a pair of flakes 7, which are adapted to be automatically projected by springs 8. Formed on the underside of the bar, and extending approximately from end to end thereof, is a rope channel 9, and formed at the extreme rear end of the bar is a cross slot 10 with which the rope channel communicates. EX- tending crosswise of the slot and secured to the bar is a pin 11, and secured thereto by means of an eye 12, or other suitable lashing, is a rope 14- to which the harpoon is attached.

"The bomb here shown is cone-shaped and pointed and is provided with an interior chamber 15, which is adapted to be charged vith black powder or any other suitable eX- plosive. This charge is fired by a time fuse 1G, which inturn is ignited by a pistol or a revolver cap 17 and a firing pin 18. The firing mechanism is supported in the forward end of the harpoon and projects through the threaded extension, a central passage kor chamber 19 being provided for the reception of the firing medhanism as a whole. j The firing mechanism consists of a cylinder 20, which is threaded at its forward end, as at 21, and thereby secured in 1 the central passage when inserted. vThis cylinder .is also interiorally threaded for the reception of firing block 22 and a fuse securing sleeve 23. rfhe firing block 22 is provided with a central passage 2115, which `is penetrated by the firing pin 1S when this is projected, and a cartridge 17 is adapted to be inserted between the firing'blocl and the sleeve 28where itf is adapted to be impinged or struck by the pin 18, said pin 1S being projected by a spring 25 interposed between the end of the cylinder 2O and a'collar 26. formed onthe tiring pin. The rear end of the firing pin is provided with two perforaations 27 and 28 Vfor the reception of a wire 29. This wire is passed through an opening 30 formedA in the bar and is then carried forward to a pin 31, which is lashed or other-l wise' secured to the bombV cated at 82 One of the features of the present invention is to provide a harpoon which lhas a greater range than the most` standard forms employed today, and which will not fire Upon impact, but only after the harpoon has entered. long lrange is obtained and greater accuracy in shooting by presenting a harpoon-which may 'be'likened unto a spear,that is it consists of a long cylindrical bar'2, which is provided with a comparatively heavy head member presented by the bomb l. This designand shape lowers the head resistance to a minimumwheu the harpoon is in flight and therefore materially increases the range and accuracy. The firing of the bomb here shown cannot take place except after the harpoon has entered. This is due to the fact that the pin 31 is proper as indi- Vwithin the gun muzzle.

lashed to the forward end of the bomb.v rl`his pin tears away as the harpoon enters and thereby slachens the wire 30. This wire is threaded through the perforations 2S and 29 and holds the firing pin in extended 'postion. y The slackening of the wire, as the harpoon enters after the lashing 32 has been broken, releases the firing pin and permits the spring to project the same. The cartridge Yis in this manner exploded and 'the time fuse ignited and as this 4may be regulated to fire the lnain charge within the bomb at any time desired, it should be obvious that explosion will not talzerplace'V until the harpoon has become thoroughly embedded in the whale. y,

ln actual practice the harpoon is placed in the muzzle of the gun, the rope or cable le; being extended forwardly through' the rope channel 9 and then led to a long coil placed in front of the gun.Y The flukes 7 are folded inwardly against the spring tension and therefore liey flat against thema-in body ofthe harpoon when this is inserted main flat or folded whilethe harpoon is in flight due to momentum and the air pressure exerted and only have a tendency to become projected after the harpoon has entered andparticularly when a pull is exerted bythe whale. Y Y Y The entire structure shown 1s exceedingly simple and substantial in design,'and break-v should therefore be reduced toa minimum. plied and removed whenever required and similarly the firing n'iechanism as this is also removable with relation to the harpoon proper. Y Y

lWhile certain features of the'present invention are more or less specifically illust'rated, l wish it understood that various changes in form and proportion may be resorted to within the scope of the appended claims, similarly vthat the materials Vand linish of the several parts employed may be such as the experience and judgment of the manufacturer may dictate or varying conditions may demand.V

Having thus described my invention, what I claim and desire to secure by Letters Patent is- Y l. A harpoon bomb explosive containing head, a cylindrical shank formed to lit the barrelof an impelling gun and a screw threaded connection' between the head Vand the shank, a tube vand a chamber `formed in the shankwithin which the tube is secured, a firing block in the head of the tube, a fuse projecting therefrom into the explosive .containing head, a springy T hey similarly re-V rl`he loaded bomb can be easily ap-Q comprising a hollow ifnanea' pressed firing pin movable in the tube to engage the firing block, a pin disposed trans- A versely exterior of the explosive containing head, means for lasl'iing the pin, and a flexi ble connection between the pin and the firing pin,said transverse pin and flexible connection being automatically releasable upon 'contact of the transverse pin with the obhead, a transverse pin carried by the explosive head and adapted to be lashed thereto, and il, flexible connection between the transverse pin and the firing pin. Y

8. ln a harpoon of the character described a bar of considerable length, a rope channel formed in the bar extending substantially fromend to end, a cable adapted to pass through said Vchannel and pivot-ally attached to the rear-'end of the bar, a removable explosive -containing head adapted to be secured to the opposite end of the bar, means actuated by impact for firing the charge contained in said head, a pair of oppositely disposed channelsformed in the bar at right Vangles to the rope channel, a pair of fiules pivotally mounted one in each channel, said fluhes ,adapted to entirely enter the channels when folded andaV spring secured in each channel and engageableV with the flukes to normally project theliukes.4 c

'In a harpoon of the character described a bar of considerable length, a threaded eX- tension on the forward end thereof, a central chamber formed in said extension and in 'the bar, a'cylinder'adapted to be screwed ,the central extension, a pin Acarried by the bomb and attac-hed to the wire, and means for temporarily 'lashing the pin on the bomb. In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

y Y K SIGURD HANSEN.

/vitnesses: i

W7. lV. HEALEY, THos. CASTBERG. 

